When this spell is cast it creates a bubble of clean air around the target. This drives out foul or stale air and turns it to fresh air. It is used most often to create the air bubble around a person who has fallen overboard and has drifted out of the air envelope of the ship. This air bubble lasts for 5 rounds then the vacuum of space takes over.

If the target is affected by a spell or an event like the cloudkill spell, it will shield them from the effects by creating a vacuum around them, separating them from the harmful air, before the effect of the spell/event begins again.

At Higher Levels. When using a spell slot of 2nd level or higher the air bubble lasts an additional 5 rounds per spell slot above 1st